Flushing-valve for water-closets.



A. F. cumm. FLUSHlNG VALVE FOR WATER CLOSETS.

APPLICATION FILED MAY25,1918.

Patented Nov. 19, 1918.

ANDREW F. CURTIN, OF MEDFORD, MASSACHUSETTS.

' ,ZELUSHING-"EJALIIE re n vinrnit-cLosnTs.

' Application filed May 25, 1918. Serial No. 236,517.

provernent in flushing valves for water closets.

The object of the invention 1s to improve upon the construction and arrangement of y the parts of aw'ater closet flushing valve'in order to produce a more durable and, consequently, a more eflicienti'fiushing valve than has heretofore'been produced. A i further "object of tlieinvention is to improveupon the construction of afiushingvalveto the, end, that the cost of production or manufacuture'thereofinay befreduced. r To the accom- -plishinentof these objects and such others as shall hereinafterappean' the present invention consists in the improved flushing valve particularly. pointed out in the appended ting valve being described'ilr the ifollowing claims a specific embodiment of this flushspecification. z. r a l The preferred form of theinvention is illustratedin the accompanying. drawing, in

which Figure l is a 'verti cal section of the improved fiushingvalve and Fig. 2 isia bottornplanview. thereof on airedueed scale. In its general principles of construction and anode of operation, 'the valveillustrated in located to the closet-bowl. The body porproposed by the present invention consist the drawing and chosen for'theapplieation thereto of the principles of the. presentinventi0n "is substantially like the flushing svalve shown and described in thepatent to Curtin No. 1,263,534 granted April'23, 1918.

This flushing valve comprises a hollow body portion 5 through which the water passes from the tank in which the flushing valve is 7 -tion 5 is furnished with theusual spudfi for insertion through a hole inthe bottom of the tank and witl a hollows-rm "7 for sup- .porting the overflow pipe. The upper end of the body portion 5 opens mto the tank and constitutes the inlet of the flushing valve and the lowerend or. spud Got the body por- SpecificationofIletters ZE'atent. Patented NOV. 19, 1918- tion constitutes the outlet of the flushing I valve.

The valve Proper consists of a flat valve disk 9 carried on the bottom of a hollow float. member 10 and is adapted to seat upon the upper rim 11 of the body portion 5. The valve float 10 is provided with an eyepiece or nut 12 for the accommodation of a chain or rod by which the flushing valve is manipulated. Fixed within the body portion 5 by means'of a transverse support lat is adash pot '15 closed-at its lower end and within which a piston or plunger .16. is adapted to slide freely. The plunger 16 is connected bya rod 17 with the float 10 and is guided in its up and down movement by a nut 18 screwed onto the upperend of the dash pot 15; Apertures 20 are formed in the upper. part of the dash pot '15 to permit Water to flow into the dashfpotlwhen the valve 9 a is unseated.

' The mode of operation of the flushing, valve thus briefly and generally described is as follows: Sojlong as the tank is full of Water, the valve-9 is heldfseated by the weight ofthe parts connected with the valve 3 and bythe pressure of the water in the tank on the float 10. The flushing of the bowl is accomplished by lifting the float by manipulation of. the usual chain or lever, whereupon the water in the tank flows through the body. portion 5 to the bowl. The lifting of the fioat br'ings the plunger 16 into the upperend of the dash pot 15 and just above the 1. apertures QO'so that the water can flow down into the'dash pot below the plunger. The

.buoyancy of the float when it has been lifted keeps the valve 9 unseated until the water inthe tank; has receded to a predetermined level, whereupon the action of the plunger on the. water in the-dash pot assures the gradual and silent closingof the valve and a proper refilling of the bowl, all occurring substantially as in the flushing valve shown and described said patent.

The improvements in water closet valves as in the construction by virtue of which the various parts of the flushing valve are I iformed, assembled and permanently held togetherso as toconstitute'a durableflushing 2st which has an upturned marginal flange to receive tiglity the rim of the hell it) and an internally downturned flange 26 surrounding a central aperture 27. The rim of the bell 10 is provided with two grooves 29, which when the bell is joined to the plate 2%, are adapted to receive white lead or the like to establish a water tight joint between the rim of the bell and the flange 25. It is apparent that the grooves 29 could be dispensed with, or thatthe rim of the bell and the flange 25 could be in threaded connec tion. lnto the downturned flange 26 is screwed a relatively heavy centerpiece 28, preferably made as a casting, and having a threaded central hole into which the plunger rod 17 is screwed. The bottom end of the centerpiece 28 extends below the down turned flange 26 to accommodate a nut 31 which performs the double function of holding the leather valve disk or washer 9 up against the under side of the bottom plate and holding the centerpiece in place.

This centerpiece 28 is in the form of an inverted cup and up into this centerpiece the upper part of the dash pot 15 extends. An aperture 33 is cut in the side of the centerpiece to permit any water that might find its way into the hollow float to flow out therefrom, down through the body portion of the valve. The eye-piece or nut 12 screws onto the projecting end of the plunger rod 17 and takes against the top of the bell 10.

During the process of assembling the parts of the flushing valve, the centerpiece 28 is first screwed into the bottom plate 2% from the top thereof, as appears from the drawing, and then the bell 10 is forced into the marginal upturned flange 25, The nut '18 is next passed over the upper end of the plunger rod 1T and then the plunger rod is simultaneously screwed into both the centerpiece and the top of the bell until the shoulder on the rod presses firmly against the under side of the central portion of the centerpiece, The eye-piece 12 is then screwed onto the projecting end of the rod 17 and screwed down firmly against the top of the bell so as thereby to firmly attach it to the bell without distortion of the bell or subjecting it to any crushing stresses, as the pressure exerted by the eye-piece on the bell is taken by the thread on the upper end of tlie rel 1T. The valve dial; 9 is on the ho tom of the boitoln the downiuriird flange 26 am nut 31 is screwed out) the projcc' ii k of the centerpicco. The plutgcr 16 may now be inserted into the dz sh pct 15 and the nut 18 ccrewc-d into the upper end of the dash pot, tlierely roinpletirp; the assemblage of the parts. It is apparent that if at any time the bell should become injured the ey picce 12 may be taken elf. so that the bell can be removed from the flange 25 and unscrewed from the end of the plunger rod 17 without disturbing the other parts: of the valve. In thisconncction it is to be'noted that the threads in the flange 2",, the central hole in the centerpiece 28, and'the hole in the top of the hell are all of the samepitch. From the foregoing description it is now apparent that the flushing valve construction of the present invention presents several features of iinproven'ient over previous constructions of flushing valves. The assembling together of all the parts (except the joint between the bell and the flange 25) by means of threads, thereby entirely eliminating the use of solder, conduces greatly, to the durability and consequent permanent elliciency of the valve. One important advantageof the present construction lies in the fact that the plunger rod 1?, being threaded into the centerpiece 28 and into the top of the bell simultaneously, holds the top of the bell a predetermineddistance from the top end 'of the centerpieceso, that the eyepiece'l2 can be jammed down against the top of the bell under considerable pressure without a liability of crushing in the bell, and so in like manner the bell is lifted by stresses transmitted through the stem or rod 17, thereby avoiding any distortion or racking of the bell, as a result of which the joints of the bell'are not liable to be loosened in use. A further advantage of the present construction lies in the fact that the centerpiece is a relatively heavy casting and that it serves as ion a backbone or skeleton for supporting the other parts of the flushing valve.

The various parts constituting the flushing valve of the present invention not only produce a durable and efficient valvewhen they are assembled, but theyare so con structed that they may be made cheaply and in large quantities by a few simple processes of manufacture. The bell 10 is, as before stated, drawn or spun into form.

The bottom plate 2% is stamped or spun into i shape. The centerpiece is a' casting which may be, finished by a simple, automatic screw machine process, and the rod 17 is easily made in a screw machine. It is thus seen that all the parts are adapted for quantity production by meansof dies, molds, or turret machine work so that when the parts are made they can be readily assembled without any further mechanical work other than screwing them together in order to assemble them into a completed valve.

Having thus described the invention what is claimed as new is:

1. A flushing valve for water closets comprising a hollow body portion having an inlet and an outlet, a valve for normally closing the inlet, and a float connected with the valve consisting of a bell and a bottom plate, said bottom plate having an upturned marginal flange for connection with the bell, and a downturned central flange.

9.. A flushing valve for water closets comprising a hollow body portion having an inlet and an outlet, a valve for normally closing the inlet, and a float connected with the valve consisting of a bell and a bottom plate, said bottom plate having an upturned marginal flange for connection with the bell, and a downturned central flange, a rela' tively heavy centerpiece screwed into the central flange and having, an opening by which water may flow out of the float and into the hollow body portion.

3. A flushing valve for water closets comprising'a hollow body portion having an inlet and an outlet, a valve for normally closing the inlet, a float connected with the. valve consisting of a bell and a bottom,

plate, said bottom plate having a central Copies of this patent may be obtained for five cents each, by addressing the aperture, a centerpiece screwed into the cenflange, and a rod which screws into the centerpiece and into the top of the bell.

5. A flushing valve for water closets comprising a hollow body portion having an inlet and an outlet, a valve for normally closing the inlet, a float connected with the valve consisting of a bell and a bottom plate, said bottom plate having an upturned marginal flange into which the bell fits and a downturned central flange, a centerpiece screwed into the central flange, a rod screwed into the centerpiece and into the top of the bell, an eyepiece screwed onto the end of the plunger rod and taking against the top of the bell, anda nut screwed onto the bottom of the centerpiece for holding the valve against the underside of the bottom plate and the centerpiece in the bottom plate.

ANDREW F. OURTIN.

Commissioner of Patents,

Washington, D. 0. 

